ID 74531
Title Transcription
ナンショウカセイ デキストリン セッシュ ガ ケイウンドウジ ニオケル トウ シシツ タイシャ ニ オヨボス エイキョウ
Title Alternative
Effect of Indigestible Dextrin Intake on Carbohydrate and Lipid Metabolism in Exercise
Author
Takahashi, Masaki Graduate School of Human and Natural Environment Sciences, The University of Tokushima
Kubo, Sayaka Faculty of Integrated Arts and Sciences, The University of Tokushima
Matoba, Hideki Institute of Socio-Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Obara, Shigeru Institute of Socio-Arts and Sciences, The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Content Type
Departmental Bulletin Paper
Description
It has been reported that dextrin (DX) has an effect of inhibition from elevation of blood glucose concentration after taking a meal. A little increase of blood glucose concentration after the meal would not accelerate secretion of insulin from the pancreas, so that, the blood insulin concentration may not elevate so much after the meal. The purpose of this study is to investigate the effects of DX intake with light meal on carbohydrate and fat metabolism in light intensity exercise. Eight young male subjects participated in this study. They took the light meal one hour before exercise, and performed a 30-min exercise at light intensity of heart sound breaking point on a cycle ergometer under two conditions of taking the meal with and without DX. Heart rate, oxygen consumption, plasma lactate (LA), plasma glucose (BG) and plasma free fatty acid (FFA), and respiratory exchange ratio (RER) were determined at before meal, start of exercise after 60 minutes of taking the meal, midpoint of exercise (15-min point), end of exercise (30-min point) and recovery phase after 15 minutes from cessation of the exercise. Average heart rate were 126.3 (SD; 11.3) and 122.8 (10.1) bpm during exercises with and without DX, respectively (not significant). Oxygen consumptions were 1.18 (0.24) and 1.16 (0.22) 1/min during exercises with and without DX, respectively (not significant). LA showed same values (1.8 (0.6) mM) in both conditions (not significant). BG showed significantly low values in DX condition at start and end of exercise and recovery phase than that in non-DX condition. FFA showed also significantly low values in DX condition at start and end of exercise and recovery phase than that in non-DX condition. These results indicate that DX inhibit absorption of BG not only at rest but also during exercise, and intake of DX with a meal may affect to elevate FFA intake to active muscle during exercise.
Journal Title
徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima
ISSN
09146385
NCID
AN10065859
Volume
24
Issue
4
Start Page
21
End Page
26
Sort Key
21
Published Date
2010
EDB ID
FullText File
language
jpn
departments
Integrated Arts and Sciences